outcome 3 part 2 Flashcards
process to catalytically stabilize petroleum products and/or remove unwanted elements from products or feedstocks by reacting them with hydrogen
Hydrotreating
hydrotreating is done before processes such as catalytic reforming why ??????????
catalyst is not contaminated by untreated feedstock.
Hydrotreating is also used before catalytic cracking to
reduce sulfur and improve product yields
If these contaminants are not removed from the petroleum fractions they can have detrimental
effect in equipment, catalysts, and the quality of the finished products.
Hydrotreating for sulfur removal is called
(HDS) hydrodesulfurization
Hydrotreating explain process
1) use this process to remove unwnted element like sulfur and nitrogen and o and matillc
2) the temp of this process 315 to 425
3) and the pressure is up to 1000 psi
4) mix feedstoke with hydrogen to remove sulfur
5) enter to the preeheter and after that to reactor
6) in the reactor
1) sulfur turn into H2S
2) hydrogen enter into amonia
7) gas stream = hydrogen + H2S
hydrogen produse and H2S remove for treatment
8) liquid stream = clean oil stripped of impurtes
Hydrotreating charged under pressure (up to 1000 psi) through a
fixed-bed catalytic reactor
Zeolites use in
FCC
explain Fluid Catalytic Cracking how its work
1) temp of this process 485 to 540
2) use zeolites
3) crud oil heat and sent to reactor
4) large oil molecule break into small oil molecule
5) fuel seprated and catylatic it use to clean regenerator
6) collect fuel and catylatic remove
Hydrocracking produces relatively large amounts of isobutane for alkylation feedstock and also isomerization. T or F
T
Hydrocracking produces relatively large amounts of isobutane for ………………feedstock and also …………………
1) alkylation
2 )isomerization.
Hydrocracking work
1) cracking — brake carbon with heat and catalytic
2) hydrogeneration – add hydrogen to stubbleze the molecule
3) high temp and high pressure and hydrogene are used in this process
the temp of this process 400 to 800
